Over the 2011 data, the percentage of Portlanders using active transportation modes (either riding transit, bicycling or walking to work) remained the same at 24%. Portlanders driving to work increased by 1%.

Portlanders reporting walking to work saw the biggest jump, increasing from 4.9% to 6.9%, a 42% increase. Transit and bicycling both saw small decreases compared to last year.

While the data has varied from year to year, the long term trend is clear: more Portlanders are choosing lower cost, active and environmentally friendly methods for getting to work. Bike commuting has increased 420% since 1990 while riding transit and walking to work have remained relatively steady.

(Both charts show data for Portland, Oregon. Click on image for full-size chart.)